1234431973 has 2 divisors, whose sum is σ = 1234431974. Its totient is φ = 1234431972.

The previous prime is 1234431967. The next prime is 1234432007. The reversal of 1234431973 is 3791344321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1180747044 + 53684929 = 34362^2 + 7327^2 .

It is an emirp because it is prime and its reverse (3791344321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1234431973 - 2²¹ = 1232334821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234431953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617215986 + 617215987.

It is an arithmetic number, because the mean of its divisors is an integer number (617215987).

Almost surely, 2^1234431973 is an apocalyptic number.

It is an amenable number.

1234431973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234431973 is an equidigital number, since it uses as much as digits as its factorization.

1234431973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 1234431973 is about 35134.4841003821. The cubic root of 1234431973 is about 1072.7266102698.

The spelling of 1234431973 in words is "one billion, two hundred thirty-four million, four hundred thirty-one thousand, nine hundred seventy-three".